Make more JS files beter match the coding standard.

test/mjsunit/array-unshift.js

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 140 matching lines @@
   assertEquals(array[0], at0);
   assertEquals(array[1], undefined);
   assertEquals(array[2], at2);
 })();
 
 
 // Now check the case with array of holes and some elements on prototype.
 (function() {
   var len = 9;
   var array = new Array(len);
-  var array_proto = []
+  var array_proto = [];
   array_proto[3] = "@3";
   array_proto[7] = "@7";
   array.__proto__ = array_proto;
 
   assertEquals(len, array.length);
   for (var i = 0; i < array.length; i++) {
     assertEquals(array[i], array_proto[i]);
   }
 
   assertEquals(len + 1, array.unshift('head'));
@@ skipping 34 matching lines @@
   }
 })();
 
 (function() {
   for (var i = 0; i < 7; i++) {
     var a = [6, 7, 8, 9];
     a.unshift(1, 2, 3, 4, 5);
     assertEquals([1, 2, 3, 4, 5, 6, 7, 8, 9], a);
   }
 })();